Isaac t



April 23, 1929. TWOODRUFF AUTOMATIC STOKING DEVICE 4 Sheets-Sheet 1 Filed Aug. 31, 1927 in-i=2: mi; U

April 1929- T. WOODRUFF AUTOMATIC STOKING DEVICE Filed Aug; 31, 1927 4 Sheets-$heet 2 /V////V// fi//////////////// y) W WW 73 L252 1 z W :5 5;: z F xx. P I/ N I 1 1/ I k I u Q N N\w\\ iv p 1929- T. WOODRUFF 1,710,134

. AUTOMATIC swoxme DEVICE I Filed Aug. 31, 1927 4 Sheets-Sheet 3 5 Isaac I mix/ruff April 23, 1929. WQODRUFF. 1,710,134

AUTOMATIC STORING DEVICE Filed Aug. 51, 1927 4 Sheets-Sheet 4 JKU'L'QIEATIG ESTQKENG- D application filed August 31, 132?. Serial. No. 216.523.

No. 1,613,501 issued February an. automatic feeder 01" Hull doinesfi in? e heat 1 inveniion, auiei'natio '10 conij'i no.

in Whit i. I o

A OlJjOUi' iigion consists in nu 'ionig; a fee orovu q the s: zzl'ovnai'e )I and i ioppei' into HQfili 1) a jei'iing ia'i'i-ion; aiii ol eizie also ni'ov. d for the of she's one of die feeding s'ri'ezizn n {he has e of the hopper on. to iihe i also l for regulai'ing; the he m from the hopper s -f 'r a convoy )1 and dis- A d tiliei'ewii h, and

,sjc-i'n'iining L14} rate of deposit into i in ehainben J is also provided for predeiei'inining of travel of the conveyor.

also provided for shilling the o and on? oi association Wli-ll the ii el oi? the conveyor the furnace iii-e ixir: 'i'oiadjusimeni: and repair.

onal objeocs of my inveniion are an seeker i'haiimay he easilyniade ow.- oi: odjnsiineni; with respect to the ".1 additional ohjeoi; of my invention is in pi-wining: an entomaic stoker for coinn51im le-d, fuels, ihat will operate continuously 1 ion eithan the filliieg; of the and ineidei'z'-al oh on consists in eeiivam:

,tisi'i'uciion and, eomhination ioh aye sot parks, he es'isential elements a f Wh foil-h i i the appended clanns, anjl a preierzed no form of embodiment of which 1.; hei'ei'nafler shown with reference to 'L h ifawings which Euros i 1 eiriine' the material into for repair and simple means for of i accompany and form a par? oi his speci- In the drawings:

Fig. 1 is a front e levaiion of that portion of my levioe that is disposed exterioi'ly oi the firebox.

2 is a sectional, side elevation, of the mechanism illusii'a'tixil in Fig. 1' and also of the firebox, the sane being alzen online 2'2 of 1, looki in the direction indicated.

Fig. 3 is a e eievaeion of that portion 41? the i'iieelianisin disposed ,cr zterioily of the box, ainl is *al-zen on line 33 of Fig. 1, iooking' 'n the direction indieaied.

5 a secijional View, taken on line 4; of 2, ioohing in the direct-ion indicated.

5 is a top, plan VlQW, oi; the firebox i 1 mechanism, and is taken on line 55 of Fig 2, looking in the dieecl ion indicated.

6 is a fragz inentar SQUUOIIZILVIGYV, ion on line 5 6 0' Fig; 2, looking in the rte porl'ion of the sloping feeding e adapted to convey, and distrilmlie, the fuel suream fr in the hopper outlet to the 0on veyoi' 'lahle.

' is an end elevation, partially in seeeza'i'oi'ioi' ()fii the lii'ehox door of the iii'agmeniiary, side elevai'ion, 1e S g of Fig. 1, of the feeding si'i-ai'e the 11 of the firebox. 'lreginentai'y, top, plan View, of

oi feeding Z'IlQjllilZllSH'), the same being), lei-zen 01 line 10-10 of Fig, 8, looking in the (li iion 'ind cat d g. 11.1 is a 1"i*a;, ;men i'niy, end View, of ihe illustrated in F 8, the same will fw'lll iion indicated. once ehai'aoieis refer to like parts e several news.

d' iiilcore 11117" on'l', i'l

invention in the lllUSilRilVG form of 'ect'on indieaied, the saline being made ioaccompanying drawings show die face composed of teeth 'derside of the strips An arm 16 embodiment Ci closed herein is intended application in fireboxes wherein coinininuted fuels and especially'savinill vaste fuels are used. In the form asherein outlined, the device meets all of the 'equircinents for the pur poses intended. Hovveveigcerta u features oi the device are admirably adap ed for use in other forms x WWW. alumna-tic stone-1.. rue

in preferred form adapted to the s ol; n;- o connninuted and sawmill Waste fuels. '1' understood that it is not intended to l i invention to such use as it is Weli ada} ted in modified forms, to the stoning of 0t 1% kinds of fuel.

Described in general terins the stoker consists of a feeding hopper ing elementsfZ and 3', d' sides and secured there tening means.

i, having SlPPGLL- sposed at oppo: 0 by suitable fasnd 5 e2:- ejour i unnion shafts ia tend outwardly therefrom and f for supporting the hopzer ar the same maybe made to parits use. Brackets Sand 7, support 1e i and 5 and torn) hearings in which shafts rook; A fuel cond brackets and connects with the the hopper 1 through which the "fuel is fed into the firebox. The fuel conduit 8 is secured directly to the firehox 9 The fuel conduit 8 may be incorporated ii a tire door 10 supported upon hinges 11,}Vl1i6l1'311213 be opened to give access to the'firebox, without the necessity of dismantling of the and the associated elements. Disposed idjacent the lower edge of the hopperand on the inner edge of the same is a comb-like sur- 12, the object of which is to break up the fuel stream as t -e same moves thereapast. A gate 13 may be utilized to check the flow of fuel from the hopper into the'firebox, the same being adapted I for manual. manipulation and adjuetn'lent.

Corrugated strips 14: are secured to one side of the hopper and extend forwardly there from and are provides with uneven corrugated surfaces over Which the fuel stream is made topass. The strips let are preferably made of lexible material that will permit of their beingraised or lowered or otherwise adjusted. The adjustment is acconr plished through the raising and lowering or the adpistinent plate 15 dlsposed on the un;

" lusawe, LA

t'ated in Fig. 3, extends through theside wall of the fuelconduit 8 and he a lever arni 17 secured thereto which coaots with ratchet quadrant 18 to permit or the adjustment o'f the plate '15 to ;c the pitch or sh oi e SLY} 3, e Lucie I have observed that there is an ever pres- 7' ent tendency of the COlllll'llDUiQtl'ilUGlS to arch over and prevent the further feeding of the fuel through a restricted opening from a container. To prevent this, and to facilitate a ioper the hopper into the me ns for an ot the hopper a inenr eh the action of Mn of 1 V 1 lowing e e wither i tne ex endii any 0 As the 10pis tilted iiher dr'ection avit' has ver rotate th I and t tendency, so to the over aner abort its supporting shock to the hopper. ti iopper has a deney preven arehi or packing of the fuel." To increase the ek'the hopper 9; inade to sh stance beam a ross and he lower end o- I path Th rocking of t act-ion to the the corrugat lci-g itudinsl the same on to the fuel e-.oross.

21 is mounted upon the ruin bearings n-i and J 1 1 gournaieu n conduit 8.

The feeding pawl 1.5) i ireee '0 e1 gage the teeil'h of the toothed i into the firebox where wrist pin relative to the slot length. Thus a. long length of slotwvill provide increased speed of rotation and a short length of slot will provide decreased speed of rotation of.

combustion bed.

The conveyor is best illustrated in Fig. 2.

and Fig. 5 where-11?. ion; itudinal side frames and all run longitudinally of the firebox. Two longitudinalsupporting beams li and also run longitudinally of the fire box and set as supporting and guide rails upon which the wheels li and -23 are made to pass. The

Wheels 42 and 43 are disposed upon the inner ends of the side frame members and act as supporting wheels for the inner end of the conveyor and at the same time not as supporting Wheels when it is found desirable to remove the conveyor Wholly, or partially, from the :lircb X. lllounted upon the shaft l6 upon which the suppor= 'ng Wheels are disposed, are sprocket wheels at? and .8 about which the -on.veyor chains 4-5) of the conveyor pass. The chains ll) a c connected ing between them cross bars which act as a drag for conveying the fuel along the bottom 51 of the conveyor.

The conveyor extends outwa dly from the front of the tirebmxand its outer end is carried upon a bracket 52. The bracket 52 has i lower cod :1 trunnion Wheel is desired to remove the conveyor from the furnace, the driving chain 512 may be removed from the sprockets one the conveyor as a WllOlQ may be tlienrelnoved ijoin the furnace and from the firebox, by the front end of the conveyor being rolled out upon the trunnion Wheels and by the rear of the same being carried upon the supporting Wheels 42 and 43 rolling on the rails l-fl and 15. For the ti, rghtcnin of the conveyor chain and to compensate for ex 7&(1Sl011 and eonti'oction, l have placed on the outer ends of the conveyor frame 9. take up hood coinposed of springs disposed between the yoke and the end 5? of the conveyor frame. A

plate 58 is olaccd between the outer ends of the sprii'. and the n" or side of the yoke.

l rnonts 5.) permit of do and the springs taming care of the 1' Threaded :uliustrnent o in udjustiuen born; in:

1 for autoniet'call l i. 7 and for maintaining a Working stress in the conveyor chain.

and have extendsite sides of the o expansion a 7rd contraction caused by the heat A iuimcouibusiible louse plate 60 is disposed longitudinally of the conveyor and longitudiiid slots 31 audit aredisposcd Within the base 60. Theslos (Si. and (32 increase in width rearward es illu i T g. 5; the object of which to per itof a. uniform distribuio of the fuel deposited therethrough over ll ler th of the conibustnm area. To

ircrent combustion within the conve or and .ro'icct the conveyorchain from becoming .:io,. 'ged,l have plnceo shields 63 and 641- at either side of the conveyor, the same running substantially the full length of the conveyor Kaine. f

To facilitate combustion, I have placed at :he bottom of the firebox a number of air lOiJOLllQS of the graces to facilitate the passage of air for combustion thcrethrough.

lfh le the form of mechanism herein shown "rribed is admirably adapted to fulfill the ob e"t$" primarily stated, it is to be under- .t it is not intended to confine the inin combination of a fuel hopper, means for siuiporting the fuel hopper, means for i" a fuel conduit disposed below and co1n1nuni eating with the fuel hopper, and corrugated strips secured to the hopper and extending dinvnivardly through the fuel conduit.

2. In :1- device of the class described, the combination of a fuel. hopper having downwardly and inwardly sloping side Walls with a passageway disposed through its lower end, supports disposed at opposite sides of the hopper, a. fuel conduit conmiunicating With the lower ond of the hopper and in registerablc alignment with the outlet end of the hopper, corrugated strips each having a ste 'niod surface contour and means for 1novin the hopper and the corrugated strips first in one direction and then in the opposite dircccion.

3. In a device of the class described, the combination of a fuel hopper, outwardly 6X tending journal. shafts disposed upon oppohopper, journal bearings for said journal shafts, an outlet disposed at the lower end of the hopper, a fuel conduit disiosoiil below the lower end of the hopper idhpted Eur condurtiir .7 from the hopper into the firebox, corrugated strips extending rom the lower end of the hopper through the L conduit and int the .irebox and means for imparting an llhQI'DliitGDt movement to the hopper and thecorrugated strips.

4. in a device of the close described, the

combination of a fuel conduit, afuel hopper grates 55 and 66 that have outwardly sloping side Walls. Holes 67 are disposed through l "ing the fuei hopper in alternate directions,

ill)

ll ii time to the firebox as the door is manipulated,

a fuel hopper superposed relativeto the fuel conduit and indirectly supported thereby, 10 and means for imparting a rocking motion to the hopper.

ISAAC T. XVQODRUFF. 

